auracaster/liblc3
3
0
Fork 0
mirror of https://github.com/google/liblc3.git synced 2026-04-20 06:34:49 +00:00
Code Issues Packages Projects Releases Wiki Activity

wip: MDCT, SNS in fixed point

Browse Source
This commit is contained in:
Antoine Soulier
2023-04-14 14:47:31 -07:00
parent 2ce884d8ef
commit 82db8e05ae
16 changed files with 2526 additions and 2187 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
test/mdct.py
View File

@@ -97,7 +97,7 @@ def check_forward_unit(rng, dt, sr):
nd = T.ND[dt][sr]
ok = True
x = (2 * rng.random(ns)) - 1
x = ( (2 * rng.random(ns)) - 1 ) * 2**15
y = [ None ] * 2
y_c = [ None ] * 2
@@ -109,8 +109,8 @@ def check_forward_unit(rng, dt, sr):
(y_c[0], d_c) = lc3.mdct_forward(dt, sr, x, np.zeros(nd))
y_c[1] = lc3.mdct_forward(dt, sr, x, d_c)[0]
ok = ok and np.amax(np.abs(y[0] - y_c[0])) < 1e-5
ok = ok and np.amax(np.abs(y[1] - y_c[1])) < 1e-5
ok = ok and np.amax(np.abs(y[0] - y_c[0])) < 1e-1
ok = ok and np.amax(np.abs(y[1] - y_c[1])) < 1e-1
return ok
@@ -137,7 +137,7 @@ def check_inverse_unit(rng, dt, sr):
nd = [ (23 * ns) // 30, (5 * ns) // 8 ][dt]
ok = True
x = (2 * rng.random(ns)) - 1
x = ( (2 * rng.random(ns)) - 1 ) * 2**15
y = [ None ] * 2
y_c = [ None ] * 2
@@ -149,8 +149,8 @@ def check_inverse_unit(rng, dt, sr):
(y_c[0], d_c) = lc3.mdct_inverse(dt, sr, x, np.zeros(nd))
y_c[1] = lc3.mdct_inverse(dt, sr, x, d_c)[0]
ok = ok and np.amax(np.abs(y[0] - y_c[0])) < 1e-5
ok = ok and np.amax(np.abs(y[1] - y_c[1])) < 1e-5
ok = ok and np.amax(np.abs(y[0] - y_c[0])) < 1e-1
ok = ok and np.amax(np.abs(y[1] - y_c[1])) < 1e-1
return ok